Building Complex Synthetic Models to Evaluate Acquisition Geometries and Velocity Inversion Technologies
Building Complex Synthetic Models to Evaluate Acquisition Geometries and Velocity Inversion Technologies
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构建复杂的综合模型来评估采集几何结构和速度反演技术
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
H. Crook
中科院分区：
文献类型：
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作者：
C. Jones;J. Edgar;J. Selvage;H. Crook
为了评价复杂地质省地震成像中的采集几何和速度反演技术，建立了复杂宽带三维合成速度和密度模型。演示了用于构建这些模型的方法，并使用了标准的处理和解释工具。该模型模拟了真实的地质复杂性，具有丰富的波数内容。采用三维声学有限差分正演模拟方法，在海底节点(OBN)和宽方位角拖缆(WAZ)的理想采集几何结构上生成合成炮集。大的源-接收器偏移量(>；15千米)、360度源-接收器方位覆盖和接收器的密集空间采样(x和y方向为25米)，为评估采集几何结构和速度反转技术提供了机会，例如全波形反转(FWI)。为此，可根据要求提供合成镜头。
Complex broad bandwidth 3D synthetic velocity and density models have been created to evaluate acquisition geometries and velocity inversion technology in seismic imaging of complex geological provinces. The approach used to build these models is demonstrated and it used standard processing and interpretation tools. The models mimic real geological complexity and have rich wavenumber content. 3D Acoustic finite-difference forward modelling was used to generate synthetic shot gathers on idealised acquisition geometries of ocean bottom nodes (OBN) and wide azimuth streamers (WAZ). The large source to receiver offsets (> 15km), 360 degree source to receiver azimuth coverage and dense spatial sampling of the receivers (25m in x and y), provide the opportunity to evaluate acquisition geometries and velocity inversion technology, such as full waveform inversion (FWI). To this end the synthetic shots are available upon request.